MCQs of Agriculture – Plant Breeding and Genetics

Protein content in barely is higher than

The first ever inter generic crossed has been successfully performed between bamboo and sugarcane by

Shull and East (1908) proposed over dominance hypothesis of hetrosis in

The first artificial hybridization in fruit crops was done by

ICARDA is located at

Law of parallele variation was given by

The concept of disruptive was given by

International institute for Tropical Agriculture is located at

Germplasm gene banks for different crop plants in world are about

Tea, coffee and mango seeds can not be converted in seed banks because they drastic loss in viability with decrease in moisture content below.

Global gene pool rice is maintained at

germplasm which is meant for short term storage (3 to 5 years) is known as

In the long term storage, germplasm can be stored upto

Global gene bank of sorghum is located at

Global gene bank of Potato is located at

Global gene bank of barley is located at

Conservation of germplasm under natural condion is called

Seeds which dried at low moisture content and stored at low temperature without losing their viability are:

Gene pool consist of

The variety of genes and genotypes found in a particular crop special are

Germplasm collected within the country is known as

Primitive cultivars which are selected and cultivated by farmers for many years are

A place or area where maximum variability of crop plants is observed

Gradual reduction on genetic variability due to elimination of various () is called

System of mating were given by

Allogamy is the common form of

Allogamy leads to

Which generate variability

The term mitosis was coined by

The term mitosis was coined by

Artificial vegetative reproduction is done by

Development of embryo from egg cell without fertilization is known as

When pollination and fertilization occur in unopened flower bud it is known as

Self pollination is associated with

Allogamy is promoted by

Mating system in which each female gamete () with every male gamete is known as

Mating between distantly related individuals is known as

Male sterility in flowering plants was first reported is

The term self incompatibility was coined by

Pollen sterility which is controlled by both cytoplasmic and nuclear genes is known as

Self incompatibility in which the genes express in the style is known as

Self incompatibility which is controlled by single gene found in some species of

Self incompatibility which is controlled by two genes is found in

Diocious plant is

Plants having monoecious flowers are found in

Rice flowers have

Anthesis starts in Allium cepa at

Anthesis starts in wheat at

Amphimixis refers to

Genetic male sterility is controlled by

Cytoplasmic sterility is govemed by

Cytoplasmic genetic male sterility was first discovered by

Herkogamy is found in

Protoandry is found in

Somatic hybrid “Pomato” was produced by fusion between potato and tomato by

RELP’s, RAPD are helpful in

RELP’s, RAPD are helpful in

Prepotency increase with increase in

Soma clone released for commercial cultivation in

The process of producing several indentical copies of a gene sequence referred to as

Pure line theory was developed by

The concept of multi line varieties was developed by

Concept of disruptive selection was first developed by

A heterogeneous population include

Homozygous population include

Mass pedigree method was developed by

Single seed descent method was first suggested by

The most effective method for the transfer of oligogenic characters

The concept of diallel selective mating was developed by

Genetic selection was proposed by

Convergent improvement was proposed by

The term recurrent selection was coined by

Reciprocal recurrent selection was proposed by

Plasmids are discovered by

In wheat, Hessian fly pest is genetically controlled by

Concept of generation means analysis was developed by

Genetic correlation between two variables may be due to

Difference between mean phenotypic value of the progeny of selected plants and the parental population is known as

Concept of biparental mating was developed by

Concept of path coefficient analysis was given by

Concept of triple test cross of analysis was developed by

The term poly genes was coined by

The term micro and macro environment was given by

The term homeostasis was coined by

Discriminant function of plant selection was suggested by

Analysis of covanance permits estimation of

High values of genetic advance are indicative of

Specific combining ability is primarily a function of

Who coined the term genetic flexibility and phenotypic flexibility

Ratio of additive variance to phenotypic variance is called

Concept of combining ability as measure of gene action was first proposed by

In line x tester cross each male is crossed with

In half diallel, total crosses among parents are equal to

Biometrics for the study of quantitative genetics was provided by

Estimation of correlation form error variances and covariance’s is

Various crosses made using a common tester are

Ratio of genotypic covariance to the phenotypic covariance is

Low magnitude of genotype x environmental interaction indicates

Jumping gene was first discovered in

Split gene was first reported in

Erucic acid is found is

In lucern, toxic substance is found in

Neurotoxin is found in

Nutritional quality breeding deals with genetic improvement in

In pulses, limiting amino acids include

In cereals limiting amino acids are

In green vegetables, the limiting amino acids is

In maize source of high lysine is

Soybean contains

The term useful heterosis was first used by

Dominance hypothesis of heterosis was first proposed by

Top cross was first suggested by

The term heterosis was coined by

Heterosis can be fully exploited in the form of

In allogamous species, a true breeding line obtained by continuous inbreeding is

Heterosis can be fixed by

Heterobeltiosis is estimated over the

Out breeding leads to reproduction in

Haploid plants have been produced by another culture in tomato by

Colchicum () is extracted from

Increased flower size has made tetraploidy important for

A nullisomic individual is represented by

An individual lacking only one chromosome from the diploid set is referred as

The change in chromosome number which involves the entire set of genome is known as

Blackeselee reported the first case of monoploid in

In primary trisomic the extra chromosome is

A gene which exhibits higher mutation rate than others is referred as

Stadler, first used X-rays for induction of mutation in

Mutation was first discovered by

A mutation which kills 50% of the individual that carry the mutation is known as

Maximum mutants varieties are evolved in

In Incern, resistance to spotted aphid is associated with

Vertical resistance is also known as

Concept of gene for gene hypothesis was developed in

In rice, brown plant hopper has no preference for

In cotton, jassids have non preference for

Disease and insect resistance is governed by

In wheat, example of durable insect resistance includes resistance to

In barley, resistance to cereal leaf beetle is associated with

Drought is measured in terms of

Drought resistance is associated with

Under drought conditions, there is an increase in

Drought tolerance is associated with

Srought is indicated by

Concept of ideotype

The term ideotype was coined by

Concept of ideotype was coined by

Norine 10 is the source of dwarfing gene in

In forage, crops, ideal plant type consists of

Dee-Geo-Woogen is the source of dwarfing gene in

Heat, cold and frost resistance ideotype have been developed in

The significance of difference among several means is tested with the help of

The experimental design which controls fertility variation in two directions in known as

The experimental design which control fertility variation in one direction is known as

Gamatophytic system of self incompatibility was first discovered by

The ratio of treatment variance to error variance is known as

The value of regression and correlation is the same when the correlation between two variables is

Headquarter of union for the protection of new plant varieties is in

Plant breeder right are operating in

In bhindi, production of foundation seed needs and isolation distance

Citification is not required for

Argemone mexicana is an objectional wed of